Cheapest return flights from Washington to London in May from $637

AirHint found the following cheapest return flights from Washington (DCA) to London (LGW) in May 2026 (see full year).

Return flights

05 May - 12 May British Airways
01 May - 16 May jetBlue
07 May - 10 May jetBlue
06 May - 12 May British Airways
12 May - 19 May British Airways
12 May - 17 May British Airways
13 May - 18 May British Airways
19 May - 09 Jun British Airways
19 May - 03 Jun British Airways
17 May - 03 Jun British Airways
12 May - 31 May British Airways
25 May - 01 Jun jetBlue
28 May - 31 May jetBlue
27 May - 31 May jetBlue
29 May - 03 Jun jetBlue
29 May - 04 Jun jetBlue
17 May - 13 Jun British Airways
15 May - 17 Jun American Airlines
18 May - 01 Jun British Airways
20 May - 03 Jun Icelandair

Also check the deals for one-way flights from Washington to London in May.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.